Arcidens confragosus

Rock pocketbook
A live individual of Arcidens confragosus

Apparently Secure  (NatureServe)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Unionida
Family: Unionidae
Genus: Arcidens
Species:
A. confragosus
Binomial name
Arcidens confragosus
(Say, 1829)
Synonyms
  • Alasmidonta confragosus (basionym)
  • Margaritana confragosus
  • Complanaria confragosus
  • Baphia confragosus
  • Unio confragosus

Arcidens confragosus is a species of freshwater mussels in the family Unionidae, the river mussels. It is commonly known as the rock pocketbook, but also has many other common names: bastard, black pocketbook, grandmaw, queen, and rockshell.